City Requiring Public Right-of-Way Work Before Your ADU or Remodel Permit?

Why Is the City Requiring This?

When a property owner applies for a building permit for an ADU, a room addition, or a remodel that increases square footage, the city's plan check process often triggers a review of the property's frontage and utility connections. If the city identifies aging or substandard infrastructure in the public right-of-way adjacent to the property, they will add a condition to the permit requiring the owner to bring it up to current standards before the project can proceed.

This is not a penalty. It is a standard practice that cities use to ensure that when a property is being significantly improved, the surrounding public infrastructure is also brought up to code. The logic is straightforward: if you are adding a 1,200-square-foot ADU, the city wants the water service line, sidewalk, and curb serving that property to be in acceptable condition before the new unit goes online.

The challenge for homeowners is that this condition often comes as a surprise. It is not always communicated clearly during the pre-application process, and the cost and timeline implications can be significant if you do not move quickly.

The Three Types of Permit Holds

Not all cities apply this condition at the same point in the permitting process. There are three common checkpoint types, each with different implications for your project timeline.

The Fullerton Example: Water Service Before Building Permit

Fullerton is one of the most active cities in Orange County for this type of condition. When a property owner applies for an ADU building permit, the city's plan check will flag properties with older water service lines and require the upgrade to be completed before the building permit will be issued.

This means the homeowner cannot break ground on their ADU until the water service line from the city main to the meter is replaced and the city has signed off on the encroachment permit. For homeowners who have already hired a contractor and are ready to start construction, this can feel like a significant delay.

The key is moving quickly once the condition is identified. The physical water service line replacement typically takes two to four days depending on the distance of pipe being installed. The bottleneck is the encroachment permit process, which can take one to three weeks depending on the city's current workload. Once the physical work is complete, the city inspector's availability adds another variable -- inspector scheduling can add days to the sign-off timeline. A contractor who is familiar with Fullerton's permit portal and requirements can compress the overall timeline significantly.

What to Do When You Receive a Permit Condition

When the city's plan check returns with a condition requiring ROW work, the notice will typically include a description of the required work, the specific code section being applied, and sometimes a reference to the city's Public Works department for coordination. Here is the right sequence of steps:

1. 1
   Do not ignore the condition -- The building permit will not issue, and inspections will not proceed, until the condition is cleared. Every week of delay is a week added to your project timeline.
2. 2
   Call a Class A contractor immediately -- The ROW work requires a CSLB Class A General Engineering license. This is not work for your ADU contractor (who likely holds a B license) or a plumber. Call a contractor who specializes in encroachment permit work.
3. 3
   Get the encroachment permit filed -- The permit application is the longest part of the process. The sooner it is filed, the sooner the clock starts on city processing. A good contractor will file within the first week.
4. 4
   Coordinate with your ADU contractor -- Let your ADU contractor know the timeline so they can plan their mobilization accordingly. In many cases, the ROW work and the ADU prep work can overlap.
5. 5
   Keep all documentation -- Once the ROW work is complete and the city signs off, get a copy of the closed encroachment permit. Your ADU contractor and the building department will need confirmation that the condition has been cleared.

A Note for General Contractors and ADU Builders

If you are a B-licensed general contractor managing an ADU or remodel project and your client's permit comes back with a ROW condition, this is a scope you cannot self-perform without a Class A license. The encroachment permit will be issued to the Class A contractor, not to you.

Ambros Construction works alongside B-licensed GCs in exactly this situation. Because a B license does not authorize ROW work or the encroachment permit process, we operate independently — pulling our own permits under our Class A license and coordinating directly with the city. We can mobilize quickly, handle the full permit process, and complete the work so your project schedule stays intact. Call us with the permit number and city and we will give you a timeline and price within 24 hours.